The U.S. Environmental Protection Agency recently notified the U.S. Army Corps of Engineers that Toronto-based Hudbay Minerals’ environmental mitigation plan for the proposed $1.9 billion Rosemont Copper Mine fails to address its impacts to southern Arizona’s water resources and fails to meet regulatory requirements under the Clean Water Act.

Hudbay’s 859-page mitigation plan is its latest attempt to salvage efforts to obtain a Section 404 Clean Water Act permit from the Army Corps. The 404 permit is the last major permit needed before construction could begin on what would be the third largest open pit copper mine in the United States.

The EPA’s 77-page assessment puts significant pressure on the Army Corps to reject the permit, which is under review by Army Corps’ San Francisco regional office. The EPA has veto authority over Corps permitting for Section 404 Clean Water Act permits.

The Army Corps’ Los Angeles district office recommended against issuing the 404 permit in July 2016 because of shortfalls in a previous version of Hudbay’s mitigation plan. The district determined the project would “cause or contribute to” violations of Arizona water quality standards and trigger “significant degradation” of federally regulated washes, the Arizona Daily Starreported on Jan. 14, 2017. The Army Corps notified Hudbay of the shortfalls in a Dec. 28, 2016, letter.

Hudbay responded by issuing an updated mitigation plan in Sept. 2017. The EPA’s latest comments are based on Hudbay’s most recent proposal.

“Our review of the (Final Habitat Mitigation and Monitoring Plan) affirms our position that the mitigation does not comply with EPA’s 404(b)1 Guidelines and the requirements of the Mitigation Rule,” the EPA states in Nov. 30, 2017 comments submitted to the Army Corps. “The HMMP proposed by Rosemont fails to offset the proposed mine’s impacts to aquatic resources in the Cienega Creek Watershed.”

The EPA’s latest comment to the Army Corps continues its longstanding opposition to the Rosemont Mine because of the widespread environmental damage the project would inflict on desert washes and streams that provide crucial wildlife habitat and contribute a significant portion of Tucson’s groundwater drinking supplies replenished by the Cienega Creek watershed.

“By any measure, the Cienega Creek watershed supports some of the most exceptional and unimpaired aquatic ecosystems remaining in the American Southwest; as a result of the (mine) project, this watershed will experience significant, permanent, unmitigated impacts to its aquatic environment,” the EPA commented.

“The mine will irreparably undo decades of public efforts to protect drinking-water supplies, biological resources and sensitive aquatic ecosystems within the Cienega Creek watershed,” the EPA states. “A crucial factor in our determination that the mine will result in significant degradation of the aquatic ecosystem is the lack of meaningful mitigation being proposed within the Cienega Creek watershed.”

The EPA’s latest comments come after the agency has repeatedly criticized previous mitigation plans offer by Hudbay and the previous owner of the Rosemont project, Augusta Resource Corp. Hudbay acquired Augusta in July 2014. The EPA has sent comments to the Army Corps opposing the Rosemont project on Jan. 5, 2012,Jan. 25, 2013, March 12, 2013, Nov. 7, 2013, to the Arizona Department of Environmental Quality on April 7, 2014, and to the Coronado National Forest on Feb. 21, 2012.

The Clean Water Act requires entities that destroy federally protected waters to provide adequate compensation to mitigate the damage. The EPA sharply criticized the Hudbay’s latest mitigation plan by focussing on the company’s proposal to enhance a riparian corridor along Sonoita Creek about 12 miles south of the mine site to obtain mitigation credits.

“The most serious underlying flaw with the (Habitat Mitigation and Monitoring Plan) assessment of functions for the determination of mitigation credits is that it contains no qualitative functional assessment of waters at (Sonoita Creek Ranch), or the Rosemont Mine impact site,” EPA states.

Hudbay assert that its plan, centering on a ranch in Santa Cruz County, will not only meet federal requirements for mitigation of environmental impacts, it will showcase how to do restoration work on arid land waterways, according to a Jan. 8 article in the Arizona Daily Star.

The EPA’s assessment comes after Pima County, the Tohono O’odham Nation, an internationally recognized hydrology expert, and a conservation group have sharply criticized Hudbay’s mitigation plan.

G. Mathias Kondolf, a University of California Professor of Environmental Planning and an internationally-known expert on hydrology and river restoration, issued a December 2017 report concluding Hudbay’s mitigation plan is based on a misleading scientific analysis and fails to offset for the loss of desert aquatic resources that would be destroyed by the mine. Kondolf has served as a consultant for the EPA on the Rosemont project.

The last time the public had an opportunity to review and comment on a Rosemont related mitigation plan was 2011, SSSR stated. At that time, the public reviewed a 6-page conceptual plan prepared by the mine’s owners.

In December, Pima County warned state and federal environmental regulators that Hudbay’s application for a Clean Water Act permit violates federal law because it fails to describe the actual mitigation the company is planning.

“The Corps must issue a new public notice because the current (Clean Water Act) application does not properly describe the mitigation activities proposed,” Huckelberry writes.

In November, the Tohono O’odham Nation asked the Army Corps to engage in “government-to-government” consultations with the tribe before deciding whether to issue the 404 permit.

“The Corps must consult with the Nation regarding its ongoing review of the permit, including all the reasons articulated in the (Corps’) Los Angeles District’s decision recommending denial of the permit,” attorneys for Earthjustice, which is representing the Nation, stated in a detailed 42-page letter.

Hudbay wants to build the mile-wide, half-mile deep open pit mine on the northeast flank of the Santa Rita Mountains on the Coronado National Forest southeast of Tucson. The mine would dump waste rock and mine tailings on more than 2,500 acres of the national forest and destroy more than 40 acres of desert aquatic resources regulated by the Army Corps and indirectly impact an additional 20 acres. The Forest Service predicts that water quality standards would be violated and the project’s dewatering of the surrounding aquifer will severely degrade and even eliminate streams supporting increasingly rare desert riparian areas including those in the Las Cienega National Conservation Area.

The project will ultimately create a “pit lake” as water flows into the pit after pumping is stopped at the conclusion of mining operations. It is predicted that the water in the pit lake will violate water quality standards for mercury, cadmium and other toxic contaminants, and will result in perpetual evaporation and loss of billions of gallons of water.

The Rosemont Mine is projected to produce about 240 million pounds of copper annually during its approximate 20-year life. Hudbay has purportedly found additional copper resources nearby that lie to the north and west of the Rosemont site, although the Forest Service EIS refused to consider these prospects.

THE BATTLE RAGES ON BETWEEN A RAG-TAG GROUP OF GOVERNMENT AGENCIES AND A TECHNICALLY SAVVY , DETERMINED OPPOSITION DRAWN FROM THE PUBLIC .

TO SAY THAT THE BATTLE IS FAIR AND ABOVE BOARD WOULD ENDORSE DISHONESTY AS THE ORDER OF THE DAY . THE GOVERNMENT AGENCIES ARE PROCEEDING WITH A SEVERELY FLAWED SET OF GUIDELINES WHICH ALLOW FOR MAXIMUM POLITICAL INTERFERENCE . IT HAS BEEN THIS WAY FOR A LONG TIME IN THE USA MINERAL RESOURCE DEVELOPMENT SECTOR .

THE ORIGINAL APPLICATION SUBMITTED BY AUGUSTA SHOULD BE DECLARED NUL AND VOID AS IT HAS ESSENTIALLY BEEN RENDERED OBSOLETE BY HUDBAY WHO HAVE INTRODUCED MAJOR CHANGES SINCE THEY ACQUIRED THE ROSEMONT COPPER PROJECT FROM AUGUSTA . AT NO TIME HAS THERE BEEN AN OPEN , PUBLIC REVIEW OF WHAT HUDBAY IS PLANNING AND/OR THE CHANGES THAT THEY HAVE INTRODUCED TO THE ORIGINAL APPLICATION . THE MITIGATION SAGA IS A GOOD EXAMPLE OF HUDBAY’S ATTEMPTS TO HOODWINK THE GOVERNMENT AGENCIES . THANKS TO THE DILIGENT EFFORTS OF THE OPPOSITION GROUPS SUPPORTED BY THE SOUND TECHNICAL INPUT OF CONSULTANTS , THE GOVERNMENT AGENCIES HAVE BEEN PUT ON NOTICE THAT TRANSPARENCY AND ACCOUNTABILITY ARE PARAMOUNT .

WHILE THE END MAY NOT BE IN FULL SIGHT , LET THIS EFFORT FROM THE OPPOSITION BE THE BEGINNING OF THE END .

So, if you can’t get your way with the Feds, then go back to the State of Arizona ADEQ.
Like HudBay’s environmental director said, Let’s get the “O” out of Outstanding Arizona Waterways. The science is clear. Hudbay, DOA!